Another Great capture for an HDR process. Again a lot of Noise in sky.
Try going to Topaz Labs and download a FREE 30 day trial of Studio 2.
Load your image. Look to the Top right you will see Add Filter. Click on it. A drop down box will appear. At the top of list is A I CLEAR. Click on it once. It will take less than 30 seconds you will see the noise removed, image slightly refocused and sharpened. Then Left click and hold on the image as it sits there and it will return to the original. Let up on button and it will return to the process you just finished. Click back and forth to see the difference of before and after. Look below on the page you will see it has defaults: Remove Noise/ AUTO and Enhance Sharpness / LOW. You can teak your settings here if you like but I suggest not to push to far as usually the default does a great job in itself. If your image still shows Noise after processing I would not push it past Medium. Give this program a try it's Free for 30 days and you have nothing to lose. Thanks for posting and have a great day.
Congrats on POTD.